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其中的几个寄存器（0x0000,0x0045,0x0046），我在datasheet上找不到相关的说明，能有人给解释一下吗？这几个寄存器有什么作用？
IER0, IER1, IFR1属于cpu寄存器，地址在下面的CPU user guide里有说明。http://www.ti.com/lit/ug/swpu073e/swpu073e.pdf
